Index: autotests/CMakeLists.txt
--- autotests/CMakeLists.txt.orig
+++ autotests/CMakeLists.txt
@@ -8,6 +8,8 @@ set(TEST_LIB
     ${MP_LIBRARIES}
 )
 
+include_directories(${GMP_INCLUDE_DIR})
+
 if(BUILD_QT4)
     list(APPEND TEST_LIB ${KDE_LIBRARIES})
 endif()
